In Situ Mechanical Analysis of the Nanoscopic Solid Electrolyte Interphase on Anodes of Li-Ion Batteries

The interfacial decomposition products forming the so-called solid-electrolyte interphase (SEI) significantly determine the destiny of a Li-ion battery. Ultimate knowledge of its detailed behavior and better control are required for higher rates, longer life-time, and increased safety. Employing an electrochemical surface force apparatus, it is possible to control the growth and to investigate the mechanical properties of an SEI in a lithium-ion battery environment. This new approach is here introduced on a gold model system and reveals a compressible film at all stages of SEI growth. The demonstrated methodology provides a unique tool for analyzing electrochemical battery interfaces, in particular in view of alternative electrolyte formulations and artificial interfaces.

Jaar van publicatie:2019

Trefwoorden:Li-ion batteries, polymers, soft matter, solid–electrolyte interphases, surface force apparatus

BOF-keylabel:ja

IOF-keylabel:ja

BOF-publication weight:10

CSS-citation score:2

Auteurs:International

Authors from:Government, Higher Education, Private

Toegankelijkheid:Open